Installing FortiGate Single Sign-on client on Server 2008 R2 core

I have a Fortigate firewall and i want manage internet access policies by integrating Fortigate with AD. The problem is that my DCs are running server 2008 R2 core, I managed to install FortiGate Single Sign-on client on the DCs but i cant configure settings. When i try to run the agent it tells me i am missing some Dlls, is there a way around this?